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Solenoid valve control apparatus and method

a solenoid valve and control apparatus technology, applied in the direction of braking systems, process and machine control, instruments, etc., can solve the problems of causing the same frequency of acoustic noise, and achieve the effect of reducing the acoustic noise of the solenoid valv

Active Publication Date: 2015-03-10
HL MANDO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a way to control the solenoid valve by adjusting the driving signal's frequency to reduce the noise generated during the control process.

Problems solved by technology

As a result, acoustic noise having the same frequency may be caused even in a solenoid valve assembly.

Method used

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  • Solenoid valve control apparatus and method
  • Solenoid valve control apparatus and method
  • Solenoid valve control apparatus and method

Examples

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Embodiment Construction

[0026]Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the drawings, the width, length, thickness, or the like of the component may be exaggerated, omitted, or schematically illustrated for convenience of description and clarity. Throughout the disclosure, like reference numerals refer to like parts throughout the various figures and embodiments of the present invention.

[0027]As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. In addition, it will be understood that when an element is referred to as being ...

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PUM

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Abstract

Disclosed herein are a solenoid valve control apparatus and method. The solenoid valve control apparatus to control a solenoid valve which include a solenoid coil and is opened and closed by current supplied to the solenoid coil, includes a switching unit which switches the current supplied to the solenoid coil, a pre-driver unit which outputs a driving signal to drive the switching unit, a current detection unit which detects the current flowing in the solenoid coil, and an MCU which controls the pre-driver unit so as to output the driving signal from the pre-driver unit to the switching unit such that a value of the current detected by the current detection unit reaches a target current value during current control of the solenoid valve and controls the pre-driver unit such that a frequency of the output driving signal is varied during output of the driving signal.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 2013-0041033, filed on Apr. 15, 2013 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.BACKGROUND[0002]1. Field[0003]Embodiments of the present invention relate to a solenoid valve control apparatus and method, capable of reducing operation noise of a solenoid valve.[0004]2. Description of the Related Art[0005]In a general vehicle equipped with an electronically controlled brake system, for example an ABS (Anti-lock Brake System), solenoid valves are mounted to inlet and outlet sides of four wheels, respectively.[0006]When such an ABS vehicle begins to slide by braking force thereof exceeding friction force between the wheels of the vehicle and the road surface, the solenoid valves of the associated wheels operate to decrease pressure. When the vehicle begins to be driven again, operation by which the solenoid valves o...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B60T15/28B60T8/50B60T15/02
CPCB60T8/5075B60T15/028B60T8/36B60T13/146B60T13/662F16K31/06
Inventor KO, SOO-HYUN
Owner HL MANDO CORP